Unreal Engine Issues
Unreal Engine Issues
Navigation becomes incorrect after flipping a widget via scaling (-1)
UE - Editor - UI Systems - Dec 22, 2015If the user flips a widget using the scaling feature in umg (scaling the widget by -1) this will cause the navigation for the widget to becomes incorrect. ...
Crash Generating Proxy Mesh with Transition Screen Size set to 1
UE - World Creation - Worldbuilding Tools - HLOD - Nov 18, 2016Crash occurs when attempting to Generate Proxy Meshes with Transition Screen Size set to 1. ...
DynamicMaterialParameters Niagara module resets write flags on emitter update
UE - Niagara - Feb 4, 2026When using the DynamicMaterialParameters Niagara module in UE 5.6, 5.7, and UE5-Main (CL 50298778), updating an emitter causes Boolean values, such as Index0Float0Write, to reset to default values, ...
Skeletal Mesh Collapses with OpenGL ES3.1 on Tegra K1 devices
UE - Platform - Mobile - Oct 18, 2016When launching to an Android device that supports ES3.1 skeletal meshes seem to collapse in game. ...
Deadlock running anim modifiers that affect bone tracks on multiple sequences
UE - Anim - Runtime - Mar 11, 2025Running anim modifiers that affect bone tracks can deadlock the editor when applied to multiple anim sequences. ...
Pausing PIE does not stop timelines from running if players is set to more than 1
UE - Networking - Nov 23, 2015Pausing PIE does not stop timelines from running if players is set to more than 1. Test project attached. Reproduced in 4.9.2 binary, 4.10.0 binary, and Main (CL# 2776829) ...
ContentExamples: PhysicalAnimation Example 1.2 the P in "BluePrint" is capitalized
Docs - Samples - Jan 19, 2017The P in "BluePrint" is capitalized in Example 1.2 of PhysicsAnimation level. The word Blueprint should match the documentation https://docs.unrealengine.com/latest/INT/Engine/Blueprints/index.htm ...
ContentExamples: StaticMeshes Example 1.7 "StaticMeshEditor" is all one word
Docs - Samples - Jan 19, 2017StaticMeshes Example 1.7 "StaticMeshEditor" is all one word The word Static Mesh Editor is 3 separate words in unreal documentation https://docs.unrealengine.com/latest/INT/Engine/Content/Types/Sta ...
MRQ - No Rayrtaced Shadows casted from Groom Caches with only 1 Spatial Sample
UE - Rendering - Graphics Features - May 28, 2025A groom cache will not cast a raytraced shadow with only 1 spatial sample. It does not matter how many temporal samples you have. ...
Snap to Bone doesn't actually affect the rotation of a Constraint in the PhAT editor
UE - Simulation - Physics - Feb 20, 2018Snap to Bone doesn't actually affect the rotation of a Constraint in the PhAT editor. The visualizer does show the expected rotation but the Constraint will still rotate in the same direction it was ...